/Engine/Source/Runtime/NavigationSystem/Public/NavigationSystem.h
EOctreeUpdateMode is deprecated. UseFNavigationOctreeController::EOctreeUpdateModeinstead.
enum EOctreeUpdateMode { OctreeUpdate_Default = 0, OctreeUpdate_Geometry = 1, OctreeUpdate_Modifiers = 2, OctreeUpdate_Refresh = 4, OctreeUpdate_ParentChain = 8, }